#include <iostream>

int main(){
    int mySum = 0;
    for (int i=1; i <= 5; i++){
        std::cout << "当前i=" << i << std::endl;
        mySum += i;
        std::cout << "mySum=" << mySum << std::endl;

        std::cout << "==================" << std::endl;
    }

    return 0;
}